Stainless Steel Heat Exchanger

Custom-fabricated stainless steel heat exchangers — shell-and-tube, coil-in-vessel, and jacketed vessel types. Available in 316L, 2205 duplex, and 904L for aggressive media. Design pressure up to 10 MPa, temperature range −196°C to 600°C. Fabricated to ASME VIII / PED 2014/68/EU. Full NDT and pressure test documentation.

MOQ: 1 unit — single units and project batches accepted
MTR + weld records + pressure test certificate included
ISO 9001 / 14001 / 45001 certified facility
Lead time: 30–60 days from approved drawing

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PRODUCT DESCRIPTION

Stainless Steel Heat Exchanger — Custom Fabrication to ASME & PED

ZEMSS fabricates stainless steel heat exchangers for chemical, pharmaceutical, food processing, and HVAC applications. Design and fabrication is performed at our Taiyuan facility to ASME Section VIII Division 1 or European PED 2014/68/EU, with full hydrostatic testing and non-destructive examination (NDE) documentation. Grade selection is matched to process media — 316L for most chemical and food applications, 2205 duplex for higher pressure or severe chloride environments, and 904L for concentrated acid or highly oxidising media.

If you have a heat duty specification (flow rates, inlet/outlet temperatures, fluid properties) but no detailed drawing, our engineering team can size the exchanger, propose a configuration, and submit a GA drawing for approval before fabrication begins.

Heat Exchanger Types

Type	Description	Typical Application
Shell and Tube (S&T)	Tube bundle inside shell. Most common industrial configuration. TEMA types BEM, AEL, AES.	Chemical process, pharmaceutical, HVAC condensers and coolers
U-Tube (Shell and Tube)	U-tube bundle allows thermal expansion without expansion joint. Single tubesheet.	High-temperature and high-pressure applications; steam condensers
Coil in Vessel	Helical coil submerged in vessel or tank. Simple, low-cost for smaller duties.	Tank heating / cooling, batch reactor temperature control
Jacketed Vessel	Outer jacket surrounds process vessel. Steam or cooling water circulates in annulus.	Reactor vessels, mixing tanks requiring temperature control
Double-Pipe	Pipe-within-pipe. Simple, high-pressure capable, easy cleaning.	High-fouling fluids, small heat duties, viscous product applications

Fabrication Specifications

Parameter	Standard Capability
Shell Grades	304 · 316L · 2205 Duplex · 904L · Carbon steel with SS tube (bimetallic)
Tube Grades	316L · 2205 · 904L · Alloy 625 (Inconel) on enquiry
Tube OD	12.7mm – 50.8mm (½” – 2″)
Shell Diameter	150mm – 2,000mm
Design Pressure	Full vacuum to 10 MPa (shell side and tube side independently rated)
Design Temperature	−196°C to 600°C (grade dependent)
Design Code	ASME VIII Div.1 · PED 2014/68/EU · TEMA class B/C
NDT	Visual · DP / MP test · RT · UT (per code requirements or client specification)
Pressure Test	Hydrostatic at 1.5× MAWP standard · pneumatic test available
Lead Time	30–60 calendar days from approved drawing and confirmed order

Key Capabilities

Tube-to-tubesheet jointing — Tubes expanded and/or seal-welded into tubesheets. Full-penetration tube-to-tubesheet welds available for zero-leakage applications (pharmaceutical, high-pressure, toxic media).
High-pressure capability — Shell-and-tube exchangers fabricated to ASME VIII Div.1 for tube-side and shell-side pressures up to 10 MPa. Tubesheet thickness calculated per UHX rules.
Cryogenic service — Impact tested plate and tube material for service to −196°C (liquid nitrogen equivalent). Charpy impact test certificates provided.
Engineering sizing service — Provide heat duty (Q, kW or BTU/hr), fluid inlet/outlet temperatures, flow rates, and fouling factors. Our team sizes the exchanger, selects tube count and pass arrangement, and submits preliminary drawing for review.
Bimetallic construction — Carbon steel shell with stainless tube bundle reduces cost while maintaining corrosion resistance on the tube (process) side. Common in large industrial condensers and coolers.

Applications

Chemical process — Reactor feed/effluent exchangers, solvent condensers, acid coolers, amine regenerators
Pharmaceutical — WFI coolers, sterile process fluid exchangers, CIP solution heaters
Food & beverage — Pasteuriser sections, wort cooling, milk cooling, beverage sterilisation
HVAC & utilities — Chilled water exchangers, steam condensers, process cooling water systems
Power generation — Lube oil coolers, hydrogen coolers, turbine exhaust condensers
Renewable energy — Geothermal fluid exchangers, biogas heat recovery, solar thermal storage loop exchangers

Why Source from ZEMSS

Engineering-to-delivery service — Heat duty specification to fabricated exchanger from one team. Eliminates the design-contractor to fabricator handoff that causes most schedule delays.
ASME & PED capability — Fabrication to international pressure codes. Enables export to regulated markets (EU, USA, Canada, Australia) without re-certification.
ISO triple certification — ISO 9001 / 14001 / 45001, certified by China Classification Society (CCS), IAF-recognised.
MOQ 1 unit — Single exchangers accepted. Pilot plant and prototype quantities welcome.
Export experience — Regular shipments to Europe, North America, and Southeast Asia. FOB Tianjin or DDP available on enquiry.

How to Order

For a design-to-quotation enquiry, provide:

Shell-side fluid (name, flow rate, inlet/outlet temperature)
Tube-side fluid (name, flow rate, inlet/outlet temperature)
Design pressure — shell side and tube side
Design code: ASME VIII, PED, or other
Grade preference for tube and shell (or state “advise”)
Fouling factors and cleaning method (CIP, mechanical, or chemical)
Nozzle sizes and connection standard (ASME B16.5 flange, DIN, or tri-clamp)
Quantity and destination port

If you already have a drawing, attach it to your enquiry. We respond within 2 business hours during UTC+8 working hours.

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Stainless Steel Heat Exchanger